
/*
 * Copyright (c) 2015-2022 Agalmic Ventures LLC (www.agalmicventures.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#pragma once

#include <cstddef>
#include <sched.h>

#include "Werk/Utility/Attributes.hpp"

#ifdef __MACH__
	struct cpu_set_t;
#endif

namespace werk
{

/**
 * Represents a CPU mask used to set processor affinity.
 */
class CpuMask
{
public:
	CpuMask(size_t processorCount);
	~CpuMask();

	void clear(size_t core);
	void set(size_t core);

	//Applies the mask to this thread, returning true on success
	CHECKED bool apply();

protected:
	const size_t _processorCount;
	size_t _size;
	cpu_set_t *_mask;
};

}
